Apparatus and method for protecting supply modulator
AssigneeSamsung Electronics Co., Ltd.
InventorsBok-Ju PARK, Hee-Sang NOH, Hyung-Sun LIM
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Abstract
An apparatus and a method for recognizing an electric over-stress of a hybrid supply modulator including a linear regulator and an Switching Mode Power Supplier (SMPS), and protecting a network from the electric over-stress are provided. The hybrid supply modulator includes at least one sensing unit and at least one actuator unit. The at least one sensing unit senses at least one of a current and a voltage at one or more points defined in advance within a supply modulator network. The at least one actuator unit performs a protection action corresponding to at least one electric over-stress situation represented by the sensing result.
Claims34
A hybrid supply modulator apparatus including a Switching Mode Power Supplier (SMPS) for generating a current of a modulated power signal and a linear regulator for generating a sourcing current for supplementing a shortage amount of a current generated by the SMPS and generating a sinking current for removing an excessive amount of the current, the apparatus comprising:
- at least one sensing unit configured to sense at least one of a current and a voltage at one or more points defined in advance within a supply modulator network;
- and
- at least one actuator unit configured to perform a protection action corresponding to at least one electric over-stress situation represented by the sensing result,
- wherein the SMPS comprises a driver configured to control at least one switch device depending on an input signal, at least one switch device configured to regulate an amount of a current under control of the driver, and a filter configured to filter a signal passing through the switch device, and
- wherein the linear regulator comprises a first transistor configured to generate the sourcing current, a second transistor configured to generate the sinking current, and an amplifier configured to regulate an amount of a current generated by the first transistor and the second transistor.
A method for operating a hybrid supply modulator including a Switching Mode Power Supplier (SMPS) for generating a current of a modulated power signal and a linear regulator for generating a sourcing current for supplementing a shortage amount of a current generated by the SMPS and generating a sinking current for removing an excessive amount of the current, the method comprising:
- sensing at least one of a current and a voltage at one or more points defined in advance within a supply modulator circuit;
- and
- performing a protection action corresponding to at least one electric over-stress situation represented by the sensing result,
- wherein the SMPS comprises a driver for controlling at least one switch device depending on an input signal, at least one switch device for regulating an amount of a current under control of the driver, and a filter for filtering a signal passing through the switch device, and
- wherein the linear regulator comprises a first transistor for generating the sourcing current, a second transistor for generating the sinking current, and an amplifier for regulating an amount of a current generated by the first transistor and the second transistor.
Dependencies are inferred from the claim text.